js date

// 时间戳转时间
function timestampToTime(timestamp) {
    var date = new Date(timestamp * 1000); //时间戳为10位需*1000，时间戳为13位的话不需乘1000
    var Y = date.getFullYear() + '-';
    var M = (date.getMonth() + 1 < 10 ? '0' + (date.getMonth() + 1) : date.getMonth() + 1) + '-';
    var D = date.getDate() + ' ';
    var h = date.getHours() + ':';
    var m = date.getMinutes() + ':';
    var s = date.getSeconds();
    return Y + M + D + h + m + s;
}
// 时间转时间戳
var date = new Date('2014-04-23 18:55:49:123');
// 有三种方式获取
var time1 = date.getTime();
var time2 = date.valueOf();
var time3 = Date.parse(date);
console.log(time1);//1398250549123
console.log(time2);//1398250549123
console.log(time3);//1398250549000
// 时分秒转为为时间戳
// hour:12
// minute:30
// second:30
function hourAndMinuteAndSecondsToTimestamp(hour,minute,second){
    second = second || 0
    return (hour * 60 * 60 + minute * 60 + second) * 1000;
}
// 获取今天之后一周的日期
// date:"2020/12/10"
function getWeekArr(date) {
    var today = new Date(date);
    var dateArr = []
    for (var i = 0; i < 7; i++) {
        var newDate = new Date(today.getTime() + i * 1000 * 60 * 60 * 24)
        var year = newDate.getFullYear()
        var month = (parseInt(newDate.getMonth()) + 1) > 9 ? (parseInt(newDate.getMonth()) + 1) : "0" + (parseInt(newDate.getMonth()) +1)
        var week = new Array("周日", "周一", "周二", "周三", "周四", "周五", "周六")[newDate.getDay()]
        var day = (newDate.getDate()) > 9 ? newDate.getDate() : "0" + newDate.getDate()
        var fullDate = `${year}-${month}-${day}`
        dateArr.push({
            date: fullDate,
            day: day,
            week: week
        })
    }
        return dateArr
}